------ Shared Memory Segments --------
key        shmid      owner      perms      bytes      nattch     status      
0x00000000 262145     bob        600        393216     2          dest         
0x00000000 2523138    bob        600        393216     2          dest         
0x00000000 2555907    bob        600        393216     2          dest         
0x00000000 3375108    bob        600        998400     2          dest         
0x00000000 3440645    bob        666        40         1                       

------ Semaphore Arrays --------
key        semid      owner      perms      nsems     
0x000005b1 262146     bob        600        6         

------ Message Queues --------
key        msqid      owner      perms      used-bytes   messages

/^0x/ && $3 == user {
        o = o type $2
}

m 3440645  0x00000000 666        bob        40         1                       
s 262146   0x000005b1 600        bob        6

0x00000000 3440645    bob        666        40         1                           
0x000005b1 262146     bob        600        6

#!/bin/bash
# Usage: ipcs [-mqs] | cleanipc
#
# This script reads output from the ipcs utility from standard input and uses
# ipcrm to remove all message queues, shared memory segments, and semaphore
# sets whose owner matches is the person who invoked this utility as determined
# by $USER from the environment.
ipcrm $(awk -v user="$USER" '
$1 ~ /^(m|q|s)$/ && $5 == user {
	o = o " -"$1 $2
}
END {	print o
}')